Wind — 2026
| Month | Opwijk | Merchtem | Difference |
|---|---|---|---|
| Jan | 12.7 km/h | 12.7 km/h | +0.0 |
| Feb | 14.1 km/h | 14.1 km/h | +0.0 |
| Mar | 11.9 km/h | 12 km/h | -0.1 |
| Apr | 11.8 km/h | 11.8 km/h | +0.0 |
| May | 11.5 km/h | 11.5 km/h | +0.0 |
| Jun | 12.8 km/h | 12.8 km/h | +0.0 |
| Jul | 12.3 km/h | 12.2 km/h | +0.1 |
| Aug | – | – | – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |